"I don't know how you can enforce a rule like that unless you had a robot on the track to grab the person and put them back in the car.

"The only way you can enforce it is with a penalty system afterward. Really at that point, it's not effective. It's a difficult rule to try to make work."

Ward was struck and killed by a sprint car driven by three-time Sprint Cup champion Tony Stewart during last Saturday night's Empire Super Sprints race at Canandaigua (N.Y.) Motorsports Park. After spinning from contact with Stewart, Ward scrambled out of his car and down the banking to confront Stewart as his car went by under yellow.

Keselowski ran across the track while cars circled under yellow after a crash during a Nationwide Series race last fall at Kansas Speedway.

"I hate to put myself in NASCAR's shoes," the 2012 Cup champion said when asked if he expected a rule change. "I think sometimes we put so many rules in place, it's almost impossible to enforce them all. I don't know what the line is or if there should be a line or an area that needs a rule. Man, I'm glad I don't have to make that decision."

Brad Keselowski points to Kyle Busch's pit area as he runs off the track after a collision during a Nationwide Series race at Kansas Speedway on Oct. 5, 2013.(Photo: Colin E. Braley, AP)

With Ward's funeral scheduled for Thursday, Keselowski said his take was "to let the dust settle for a little bit and let some cooler heads prevail. Certainly, a lot of emotion charged on this topic, which is good in the sense that people care. I don't want to understate that. But it's obviously still very, very tragic and still very, very fresh. A raw wound.

"I don't even think everybody has all the facts. I think we have to get to that level first. For me personally, have some respect to the family, get through their process, then kind of dig into the hows, whys, whats (and) how we can possibly prevent something like that happening in the future."

Among the most active drivers on Twitter, Keselowski said it was "extremely difficult" to witness the social media storm in the wake of Saturday and weighing how to engage.

"The last thing I want to do is sound like I'm the guy who has all the answers on that because I clearly don't," he said. "It's difficult because I feel like when I remain silent, I kind of feel like a wuss that I'm bowing out of controversy. I believe in all those things that a good nation goes down when great minds remain silent. I think we live in a great nation, and we still live in a great time, whether we realize that or not.

"I always have that temptation to speak my mind on those topics. But then on the other side you have to realize for whatever reason, all these media fronts are very, very polarizing. It seems like no matter what you say, someone will be offended.

"The reality of our situation in this sport right now is we rely on corporate America to fund our teams and my own career. I need to have as many fans as possible to justify those expenditures. If you alienate any one part of that fan base, you're really inhibiting your own future career. In that sense, it kind of feels like a lot of times you're trapped as a driver. I'm sure it's more than just a driver. It's other forms of public figures. You just try to navigate it with as much balance as possible. That's really the only solution that I have"

PHOTOS: Brad Keselowski through the years

Brad Keselowski, who was born Feb. 12, 1984 in Rochester Hills, Mich, began his NASCAR career as the driver of the No. 29 Ford F-150 for the family-owned K-Automotive Motorsports in the Craftsman Truck Series. (Photo: Andrew Weber, USA TODAY Sports)

In winning the Chase opener at Chicagoland Speedway in September 2014, Brad Keselowski became the first driver to advance in the new Chase for the Sprint Cup format. (Photo: Jasen Vinlove, USA TODAY Sports)

Brad Keselowski listens as President Barack Obama speaks during a ceremony on the South Lawn of the White House on April 16. Obama honored Keselowski for winning the 2012 Sprint Cup championship. (Photo: Manuel Balce Ceneta, AP)

With Brad Keselowski's Blue Deuce in the background, President Barack Obama shakes hands with the reigning Sprint Cup champion on the driveway of the White House on April 16. (Photo: Mark Wilson, Getty Images)

Brad Keselowski, getting a hug from Miss Sprint Cup on March 1, 2013, began the 2013 season finishing fourth at the Daytona 500 and the following week in Phoenix and followed those races up with a third-place finish at Las Vegas. (Photo: Mark J. Rebilas, USA TODAY Sports)

Former Pistons basketball player Rick Mahorn presents Brad Keselowski with an honorary checkered flag during halftime of Detroit's game against the Milwaukee Bucks at The Palace of Auburn Hills on Jan. 29, 2013. (Photo: Raj Mehta, USA TODAY Sports)

Brad Keselowski won his first career Sprint Cup championship, Nov. 18, 2012 at Homestead-Miami Speedway. Keselowski won two of the 10 Chase races and five races overall in 2012. (Photo: Mark J. Rebilas, US Pesswire)

Brad Keselowski finished 15th in the Sprint Cup season finale at Homestead-Miami Speedway, which was more than enough to clinch the title after top 2012 rival Jimmie Johnson experienced mechanical problems with 40 laps left. (Photo: Mark J. Rebilas, US Presswire)

Brad Keselowski, 28, has been a full-time Sprint Cup driver since 2010. Keselowski finished 25th in the 2010 standings and fifth in the 2011 standings before winning the championship this year. (Photo: Randy Sartin, US Presswire)

Brad Keselowski finished sixth at Phoenix International Raceway on Nov. 11. After Jimmie Johnson hit the wall on lap 235 and finished 32nd, Keselowski was able to open up a 20-point lead in the Chase heading into the season finale at Homestead. (Photo: Jennifer Stewart, US Presswire)

Texas Motor Speedway set up ballot boxes for the top two drivers in the Chase standings -- Brad Keselowski and Jimmie Johnson -- in the week leading up to the AAA Texas 500 on Nov. 4. (Photo: Jerry Markland, Getty Images for Texas Motor Spe)

Brad Keselowski, right, and Jimmie Johnson, battled for the lead right to the end at Texas Motor Speedway, before Johnson pulled away on the final lap to win the AAA Texas 500 on Nov. 4. Keselowski finished second. (Photo: Todd Warshaw, Getty Images for NASCAR)

The Dodge driver notched his second Chase win at Dover, on Sept. 30, using a fuel strategy that saw him outduel the Hendrick Motorsports cars of Jeff Gordon and Jimmie Johnson. (Photo: Jerry Lai, US Presswire)

Brad Keselowski celebrates with team owner Roger Penske (right, in red hat) and his crew after winning at Chicagoland Speedway on Sept. 16 to kick off the 10-race Chase for the Sprint Cup. (Photo: Jared C. Tilton, Getty Images)

After winning three races, Brad Keselowski qualified for his first Chase for the Sprint Cup in 2011. Though, he didn't win any of the Chase races, he still finished a career-best fifth in series points. (Photo: Mark J. Rebilas, US Presswire)

Brad Keselowski works with Rebecca Rice, a physical therapist at Pit Instruction and Training in Mooresville, N.C., to rehab his left ankle. Keselowski broke his ankle during a test run at Atlanta Motor Speedway on Aug. 3, 2011. (Photo: Davis Turner for USA TODAY)

Brad Keselowski scored his third Sprint Cup win of the season and the fourth of his career at the Irwin Tools Bristol Night Race at Bristol Motor Speedway on Aug. 27, 2011. (Photo: John Harrelson, Getty Images for NASCAR)

Brad Keselowski relaxes before the 2011 Good Sam RV Insurance 500 at Pocono Raceway on Aug. 5. Hours later, Keselowski would win his second Sprint Cup race of the season and the third of his career. (Photo: Tom Pennington, Getty Images for NASCAR)

Brad Keselowski does a burnout after winning the STP 400 at Kansas Speedway on June 5, 2011. It was Keselowski's second career Sprint Cup win and the first since 2009 at Talladega. (Photo: Jamie Squire, Getty Images)

After a third-place finish in the Nationwide finale at Texas Motor Speedway, Brad Keselowski earned his first Nationwide Series championship on NOv. 6, 2010. Keselowski won 10 Nationwide races in 2010 and was voted the series' most popular driver for the third consecutive year. (Photo: Rusty Jarrett, Getty Images for NASCAR)

"Brad's the real deal," said team owner Roger Penske, who has 15 Indianapolis 500 victories but celebrated his first NASCAR crown when Keselowski won the 2010 Nationwide title. "He's the ultimate team player." (Photo: Tim Fuller, US Presswire)

A NASCAR official hands Brad Keselowski an American flag after Keselowski won the Nationwide Series Dollar General 300 at Charlotte Motor Speedway on Oct. 15, 2010. It marked Keselowski's fifth Nationwide win of the year. (Photo: Sam Sharpe, US Presswire)

Brad Keselowski was known for his aggressive style and immature streak when he entered the Cup Series full-time in 2010. "You need to be aggressive to win, but there are circumstances I've learned it's really not that helpful to be aggressive," he says now. (Photo: Andrew Weber, US Presswire)

Brad Keselowski (12) flips after being clipped by Carl Edwards, top, during the NASCAR Sprint Cup Series Kobalt Tools 500, March 7, 2010, at Atlanta Motor Speedway. Edwards had waited 153 laps for his crew to fix his car for the sole purpose of wrecking Keselowski. (Photo: Joe Sebo, AP)

Brad Keselowski won four Nationwide races in 2009 including here at the Kroger 'On Track For Cure' 250 at Memphis Motorsports Park on Oct. 24, 2009. Keselowski also won at Dover, Iowa and Michigan. (Photo: John Sommers II, Getty Images)

Brad Keselowski, shown here before practice for the 2009 Nationwide race in Montreal, signed with Penske Racing on Sept. 1, 2009, to drive in both the Sprint Cup and Nationwide Series the following season. (Photo: Ryan Remiorz, AP)

Brad Keselowski, right, is congratulated in victory lane by Dale Earnhardt Jr. after Keselowski won his first career Sprint Cup race at the Aaron's 499 at Talladega Superspeedway on April 26, 2009. (Photo: Rusty Jarrett, Getty Images for NASCAR)

Brad Keselowski, front, pulls away for his first career Sprint Cup win after tangling with Carl Edwards on the last lap of the Aaron's 499. Edwards (99) crashed into Ryan Newman, left, and went airborne into the catch fence at Talladega Superspeedway on April 26, 2009. (Photo: Glenn Smith, AP)

Brad Keselowski, chatting with former NFL quarterback and U.S. Congressman Heath Shuler (D-North Carolina) at Lowe's Motor Speedway on Oct. 13, 2006 in Concord, N.C., made his Nationwide Series debut earlier that year in Fontana, Calif. (Photo: Chuck Burton, AP)